HubMed tutorials?

Steven Cohen often demonstrates HubMed in his RSS/library presentations, which is good as more people get to hear about it. Ray Matthews at RSS in Government saw one of his talks, and wrote a nice review. Reminder to self (or anyone else who wants to do it, I guess): Ray wishes "that HubMed had more in the way of tutorials to help novices like myself get the most out of this wonderful service".